Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2008-06-25
Phys.Rev.C79:014610,2009
Physics
Nuclear Physics
Nuclear Theory
Some text is added following suggestions of a journal referee
Scientific paper
10.1103/PhysRevC.79.014610
The $J$-matrix inverse scattering approach can be used as an alternative to a conventional $R$-matrix in analyzing scattering phase shifts and extracting resonance energies and widths from experimental data. A great advantage of the $J$-matrix is that it provides eigenstates directly related to the ones obtained in the shell model in a given model space and with a given value of the oscillator spacing $\hbar\Omega$. This relationship is of a particular interest in the cases when a many-body system does not have a resonant state or the resonance is broad and its energy can differ significantly from the shell model eigenstate. We discuss the $J$-matrix inverse scattering technique, extend it for the case of charged colliding particles and apply it to the analysis of $n\alpha$ and $p\alpha$ scattering. The results are compared with the No-core Shell Model calculations of $^5$He and $^5$Li.
Mazur A. I.
Mazur E. A.
Shirokov Andrey M.
Vary James P.
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